FOSSIL FLOUR. 41 



berg's calculation, ten millions of millions of 

 individuals might be required to fill the space of 

 a cubic inch. Yet in the smallest of these crea- 

 tures there have been found several stomachs, 

 besides other organs ; and minute as the cover- 

 ings are, they are variously sculptured or marked, 

 so as to form distinctions of species." 



Here may be added, also, the remarks of other 

 authors on this curious subject. "In Swedish 

 Lapland, under a bed of decayed mosses, forty 

 miles from Degesfors, in Umea Lapmark, is 

 found a stratum of this substance known there 

 by the name of Bergmehl. When examined by 

 the aid of the microscope, it is found to consist 

 almost entirely of the remains of minute or- 

 ganisms. In seasons of scarcity this is made 



E 3 



